PRINCIPLE STATEMENT

Where common questions determinative of a claim and a counter-claim arise in a case, the trial court is not expected to consider the same questions separately in relation to the counter-claim; in this case, once the right of the respondent to the statutory right of occupancy claimed was found to be established, and was found to be in possession of the land at the time of the trespass complained of, the counter-claim fell to the ground.

RATIO DECIDENDI (SOURCE)

Per Ayoola, JSC, in Aderounmu & Anor v. Olowu (2000) NLC-2341992(SC) at pp. 13–14; Paras. D–A.
"Where common questions determinative of a claim and a counter-claim arise in a case, the trial court is not expected to consider the same questions separately in relation to the counter-claim. In this case, once the right of the respondent to the statutory right of occupancy he claimed was found to be established, and he was found to be in possession of the land at the time of the trespass complained of, the counter-claim fell to the ground."
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EXPLANATION / SCOPE

When claim and counterclaim depend on common determinative questions: court needn’t address questions separately for counterclaim—determination in main claim resolves both. Here: respondent’s right to statutory right of occupancy and possession were determinative questions—once established in main claim (trespass action), these same findings defeated counterclaim. “Common questions determinative” means: same issues decide both claim and counterclaim, resolution of questions in one context determines the other, and separate analysis is redundant. “Not expected to consider…separately” means: court can decide once and apply to both, no need for duplicative analysis, and efficiency permits single determination. Why counterclaim fell: Respondent established: (1) valid statutory right of occupancy, (2) possession at relevant time. These findings: defeated appellant’s competing claim, established respondent’s superior right, and made counterclaim (challenging respondent’s right) unsustainable. This serves: judicial efficiency, avoiding repetitive determinations, and recognizing that common questions need single resolution. Application: Once core questions resolved in main claim: counterclaim raising same issues is disposed of by those findings, separate treatment unnecessary, and outcome follows automatically. Courts should: identify common determinative questions, resolve them once comprehensively, and apply findings to both claim and counterclaim. This prevents: unnecessary duplication, extended judgments restating same analysis, and wasted judicial resources. The principle permits efficient disposal when claim and counterclaim turn on identical determinative questions.

CASES APPLYING THIS PRINCIPLE